winter tires BUICK REGAL 2020 Owners Manual

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
170 Driving and Operating
.Pay attention to special road
signs (e.g., falling rocks area,
winding roads, long grades,
passing or no-passing zones)
and take appropriate action.
Winter Driving
Driving on Snow or Ice
Snow or ice between the tires and
the road creates less traction or
grip, so drive carefully. Wet ice can
occur at about 0 °C (32 °F) when
freezing rain begins to fall. Avoid
driving on wet ice or in freezing rain
until roads can be treated.
For Slippery Road Driving:
.Accelerate gently. Accelerating
too quickly causes the wheels to
spin and makes the surface
under the tires slick.
. Turn on Traction Control. See
Traction Control/Electronic
Stability Control 0191.
. The Antilock Brake System
(ABS) improves vehicle stability
during hard stops, but the
brakes should be applied sooner than when on dry pavement.
See
Antilock Brake System
(ABS) 0188.
. Allow greater following distance
and watch for slippery spots. Icy
patches can occur on otherwise
clear roads in shaded areas.
The surface of a curve or an
overpass can remain icy when
the surrounding roads are clear.
Avoid sudden steering
maneuvers and braking while
on ice.
. Turn off cruise control.
Blizzard Conditions
Stop the vehicle in a safe place and
signal for help. Stay with the vehicle
unless there is help nearby.
If possible, use Roadside
Assistance. See Roadside
Assistance Program 0344. To get
help and keep everyone in the
vehicle safe:
. Turn on the hazard warning
flashers.
. Tie a red cloth to an outside
mirror.
{Warning
Snow can trap engine exhaust
under the vehicle. This may
cause exhaust gases to get
inside. Engine exhaust contains
carbon monoxide (CO), which
cannot be seen or smelled. It can
cause unconsciousness and even
death.
If the vehicle is stuck in snow:
. Clear snow from the base of
the vehicle, especially any
blocking the exhaust pipe.
. Open a window about 5 cm
(2 in) on the vehicle side
that is away from the wind,
to bring in fresh air.
. Fully open the air outlets on
or under the instrument
panel.
(Continued)

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
230 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 231
California Proposition65 Warning . . . . . . . . . . . . . . . . . 231
California Perchlorate Materials Requirements . . . . . 232
Accessories and Modifications . . . . . . . . . . . . . . . . 232
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 232
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 233
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 235
Engine Oil . . . . . . . . . . . . . . . . . . . . 238
Engine Oil Life System . . . . . . . 240
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 241
Engine Air Cleaner/Filter . . . . . . 242
Cooling System . . . . . . . . . . . . . . 243
Engine Overheating . . . . . . . . . . 247
Washer Fluid . . . . . . . . . . . . . . . . . 248
Brakes . . . . . . . . . . . . . . . . . . . . . . . 249
Brake Fluid . . . . . . . . . . . . . . . . . . . 250
Battery - North America . . . . . . 251
All-Wheel Drive . . . . . . . . . . . . . . . 252 Starter Switch Check . . . . . . . . . 252
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 252
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . 252
Wiper Blade Replacement . . . . 253
Windshield Replacement . . . . . 254
Gas Strut(s) . . . . . . . . . . . . . . . . . . 254
Headlamp Aiming
Front Headlamp Aiming . . . . . . 255
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 256
Halogen Bulbs . . . . . . . . . . . . . . . . 256
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 256
LED Lighting . . . . . . . . . . . . . . . . . 256
Headlamps . . . . . . . . . . . . . . . . . . . 256
Fog Lamps . . . . . . . . . . . . . . . . . . . 257
Front Turn Signal Lamps . . . . . 257
Taillamps, Turn Signal, Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 257
Electrical System
Electrical System Overload . . . 258
Fuses and Circuit Breakers . . . 259
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 259 Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 263
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 265
All-Season Tires . . . . . . . . . . . . . . 266
Winter Tires . . . . . . . . . . . . . . . . . . 266
Low-Profile Tires . . . . . . . . . . . . . 266
Tire Sidewall Labeling . . . . . . . . 267
Tire Designations . . . . . . . . . . . . . 269
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 269
Tire Pressure . . . . . . . . . . . . . . . . . 272
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . 273
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 274
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 275
Tire Inspection . . . . . . . . . . . . . . . . 278
Tire Rotation . . . . . . . . . . . . . . . . . 279
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 280
Buying New Tires . . . . . . . . . . . . . 280
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 282
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 282
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 284
Wheel Replacement . . . . . . . . . . 284

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
266 Vehicle Care
All-Season Tires
This vehicle may come with
all-season tires. These tires are
designed to provide good overall
performance on most road surfaces
and weather conditions. Original
equipment tires designed to GM's
specific tire performance criteria
have a TPC specification code
molded onto the sidewall. Original
equipment all-season tires can be
identified by the last two characters
of this TPC code, which will
be“MS.”
Consider installing winter tires on
the vehicle if frequent driving on
snow or ice-covered roads is
expected. All-season tires provide
adequate performance for most
winter driving conditions, but they
may not offer the same level of
traction or performance as winter
tires on snow or ice-covered roads.
See Winter Tires 0266.
Winter Tires
This vehicle was not originally
equipped with winter tires. Winter
tires are designed for increased
traction on snow and ice-covered
roads. Consider installing winter
tires on the vehicle if frequent
driving on ice or snow covered
roads is expected. See your dealer
for details regarding winter tire
availability and proper tire selection.
Also, see Buying New Tires 0280.
With winter tires, there may be
decreased dry road traction,
increased road noise, and shorter
tread life. After changing to winter
tires, be alert for changes in vehicle
handling and braking.
If using winter tires:
. Use tires of the same brand and
tread type on all four wheel
positions.
. Use only radial ply tires of the
same size, load range, and
speed rating as the original
equipment tires. Winter tires with the same speed
rating as the original equipment tires
may not be available for H, V, W, Y,
and ZR speed rated tires. If winter
tires with a lower speed rating are
chosen, never exceed the tire's
maximum speed capability.
Low-Profile Tires
If the vehicle has 245/45R18 or
245/40R19 size tires, they are
classified as low-profile tires.
Caution
Low-profile tires are more
susceptible to damage from road
hazards or curb impact than
standard profile tires. Tire and/or
wheel assembly damage can
occur when coming into contact
with road hazards like potholes,
or sharp edged objects, or when
sliding into a curb. The warranty
does not cover this type of
damage. Keep tires set to the
correct inflation pressure and (Continued)

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
Vehicle Care 281
GM strongly recommends
buying tires with the same TPC
Spec rating.
GM's exclusive TPC Spec
system considers over a dozen
critical specifications that impact
the overall performance of the
vehicle, including brake system
performance, ride and handling,
traction control, and tire
pressure monitoring
performance. GM's TPC Spec
number is molded onto the tire's
sidewall near the tire size. If the
tires have an all-season tread
design, the TPC Spec number
will be followed by MS for mud
and snow. SeeTire Sidewall
Labeling 0267.
GM recommends replacing worn
tires in complete sets of four.
Uniform tread depth on all tires
will help to maintain the
performance of the vehicle.
Braking and handling
performance may be adversely affected if all the tires are not
replaced at the same time.
If proper rotation and
maintenance have been done,
all four tires should wear out at
about the same time. See
Tire
Rotation 0279. However, if it is
necessary to replace only one
axle set of worn tires, place the
new tires on the rear axle.
Winter tires with the same speed
rating as the original equipment
tires may not be available for H,
V, W, Y and ZR speed rated
tires. Never exceed the winter
tires’ maximum speed capability
when using winter tires with a
lower speed rating.
{Warning
Tires could explode during
improper service. Attempting
to mount or dismount a tire
could cause injury or death.
(Continued)
Warning (Continued)
Only your dealer or authorized
tire service center should
mount or dismount the tires.
{Warning
Mixing tires of different sizes,
tread patterns, or types on the
same axle may cause loss of
control of the vehicle, resulting
in a crash or other vehicle
damage. Use the same size,
load range, and type of tires
as the original tires.
{Warning
Using bias-ply tires on the
vehicle may cause the wheel
rim flanges to develop cracks
after many miles of driving.
(Continued)

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
282 Vehicle Care
Warning (Continued)
A tire and/or wheel could fail
suddenly and cause a crash.
Use only radial-ply tires with
the wheels on the vehicle.
If the vehicle tires must be
replaced with a tire that does not
have a TPC Spec number, make
sure they are the same size,
load range, speed rating, and
construction (radial) as the
original tires.
Vehicles that have a tire
pressure monitoring system
could give an inaccurate
low-pressure warning if non-TPC
Spec rated tires are installed.
See Tire Pressure Monitor
System 0274.
The Tire and Loading
Information label indicates the
original equipment tires on the
vehicle. See Vehicle Load Limits
0 171.Different Size Tires and
Wheels
If wheels or tires are installed that
are a different size than the original
equipment wheels and tires, vehicle
performance, including its braking,
ride and handling characteristics,
stability, and resistance to rollover
may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, traction
control, electronic stability control,
or All-Wheel Drive, the performance
of these systems can also be
affected.
{Warning
If different sized wheels are used,
there may not be an acceptable
level of performance and safety if
tires not recommended for those
wheels are selected. This
increases the chance of a crash
and serious injury. Only use GM
specific wheel and tire systems
(Continued)
Warning (Continued)
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires 0280 and
Accessories and Modifications
0 232.
Uniform Tire Quality
Grading
The following information relates
to the system developed by the
United States National Highway
Traffic Safety Administration
(NHTSA), which grades tires by
treadwear, traction, and
temperature performance. This
applies only to vehicles sold in
the United States. The grades
are molded on the sidewalls of
most passenger car tires. The
Uniform Tire Quality Grading
(UTQG) system does not apply
to deep tread, winter tires,

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
Customer Information 345
.Lock-Out Service: Service to
unlock the vehicle if you are
locked out. A remote unlock may
be available if you have OnStar.
For security reasons, the driver
must present identification
before this service is given.
. Emergency Tow from a Public
Road or Highway: Tow to the
nearest Buick dealer for
warranty service, or if the vehicle
was in a crash and cannot be
driven. Assistance is not given
when the vehicle is stuck in
sand, mud, or snow.
. Flat Tire Change: Service to
change a flat tire with the spare
tire. The spare tire, if equipped,
must be in good condition and
properly inflated. It is the owner's
responsibility for the repair or
replacement of the tire if it is not
covered by the warranty.
. Battery Jump Start: Service to
jump start a dead battery. .
Trip Interruption Benefits and
Assistance: If your trip is
interrupted due to a warranty
event, incidental expenses may
be reimbursed within the
Powertrain warranty period.
Items considered are reasonable
and customary hotel, meals,
rental car, or a vehicle being
delivered back to the customer,
up to 500 miles.
Services Not Included in
Roadside Assistance
. Impound towing caused by
violation of any laws.
. Legal fines.
. Mounting, dismounting,
or changing of snow tires,
chains, or other traction devices.
Service is not provided if a vehicle
is in an area that is not accessible
to the service vehicle or is not a
regularly traveled or maintained
public road, which includes ice and
winter roads. Off-road use is not
covered.
Services Specific to
Canadian-Purchased Vehicles
. Fuel Delivery: Reimbursement
is up to 7 liters. Diesel fuel
delivery may be restricted.
Propane and other fuels are not
provided through this service.
. Lock-Out Service: Vehicle
registration is required.
. Trip Interruption Benefits and
Assistance: Must be over
150 km from where your trip was
started to qualify.
Pre-authorization, original
detailed receipts, and a copy of
the repair orders are required.
Once authorization has been
received, the Roadside
Assistance advisor will help you
make arrangements and explain
how to receive payment.
. Alternative Service: If
assistance cannot be provided
right away, the Roadside
Assistance advisor may give
permission to get local
emergency road service. You will
receive payment, up to $100,

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
366 Index
Armrest Storage . . . . . . . . . . . . . . . . . 95
Assistance Program,Roadside . . . . . . . . . . . . . . . . . . . . . . 344
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 207
Assistance Systems for Parking and Backing . . . . . . . . . . 204
Auto Stop Stop/Start System . . . . . . . . . . . . 178
Automatic Door Locks . . . . . . . . . . . . . . . . . . . . . 19
Emergency Braking (AEB) . . . . 209
Headlamp System . . . . . . . . . . . . 148
Transmission . . . . . . . . . . . . . . . . . 184
Transmission Fluid . . . . . . . . . . . 241
Automatic Transmission
Manual Mode . . . . . . . . . . . . . . . . . 186
Shift Lock Control FunctionCheck . . . . . . . . . . . . . . . . . . . . . . . 252
B
BatteryExterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 154
Load Management . . . . . . . . . . . . 153
Power Protection . . . . . . . . . . . . . 153
Battery - North America . . . . 251, 306
Blade Replacement, Wiper . . . . . 253 Brake
Parking, Electric . . . . . . . . . . . . . . 188
System Warning Light . . . . . . . . 121
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 249 Antilock . . . . . . . . . . . . . . . . . . . . . . . 188
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 190
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 166 AutomaticEmergency (AEB) . . . . . . . . . . . 209
Braking System
Front Pedestrian (FPB) . . . . . . . 210
Break-In, New Vehicle . . . . . . . . . . 175
Bulb Replacement Fog Lamps . . . . . . . . . . . . . . . . . . . 257
Front Turn Signal Lamps . . . . . 257
Halogen Bulbs . . . . . . . . . . . . . . . . 256
Headlamp Aiming . . . . . . . . . . . . . 255
Headlamps . . . . . . . . . . . . . . . . . . . 256
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . 256
Taillamps, Turn Signal, Stoplamps, and Back-up
Lamps . . . . . . . . . . . . . . . . . . . . . . 257
Buying New Tires . . . . . . . . . . . . . . . 280
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 102
California
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 232
California Proposition
65 Warning . . . . . . . . . .231, 251, 306, Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and
Specifications . . . . . . . . . . . . . . . . . 337
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 183
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . 21
Winter Driving . . . . . . . . . . . . . . . . 170
Cargo Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . 97
Caution, Danger, and Warning . . . . 3
Chains, Tire . . . . . . . . . . . . . . . . . . . . 285
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . 103
Charging System Light . . . . . . . . . 119
Check
Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . .119

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
374 Index
Speedometer . . . . . . . . . . . . . . . . . . . 113
StabiliTrakOFF Light . . . . . . . . . . . . . . . . . . . . . 124
Start Assist, Hill . . . . . . . . . . . . . . . . . 190
Start Vehicle, Remote . . . . . . . . . . . 15
Starter Switch Check . . . . . . . . . . . 252
Starting the Engine . . . . . . . . . . . . . 177
Steering . . . . . . . . . . . . . . . . . . . . . . . . 166 Heated Wheel . . . . . . . . . . . . . . . . 100
Wheel Adjustment . . . . . . . . . . . . 100
Wheel Controls . . . . . . . . . . . . . . . 100
Stop/Start System . . . . . . . . . . . . . . 178
Stoplamps and Back-up Lamps Bulb Replacement . . . . . . . . . . . . 257
Storage Areas Armrest . . . . . . . . . . . . . . . . . . . . . . . . . 95
Cargo Cover . . . . . . . . . . . . . . . . . . . . 96
Convenience Net . . . . . . . . . . . . . . . 97
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Glove Box . . . . . . . . . . . . . . . . . . . . . . 94
Roof Rack System . . . . . . . . . . . . . . 98
Sunglasses . . . . . . . . . . . . . . . . . . . . . 95
Storage Compartments . . . . . . . . . . 94
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . 300
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 Stuck Vehicle . . . . . . . . . . . . . . . . . . . 171
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 35
Sunglass Storage . . . . . . . . . . . . . . . . 95
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System
Forward Collision
Alert (FCA) . . . . . . . . . . . . . . . . . . 207
Infotainment . . . . . . . . . . . . . 155, 353
Roof Rack . . . . . . . . . . . . . . . . . . . . . . 98
Systems
Driver Assistance . . . . . . . . . . . . . 203
T
Tachometer . . . . . . . . . . . . . . . . . . . . . 113
TaillampsBulb Replacement . . . . . . . . . . . . 257
Text Telephone (TTY) Users . . . . 343
Theft-Deterrent Systems . . . . . . . . . 30 Immobilizer . . . . . . . . . . . . . . . . . . . . . 30
Thigh Support Adjustment . . . . . . . 43
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
All-Season . . . . . . . . . . . . . . . . . . . . 266
Buying New Tires . . . . . . . . . . . . . 280
Chains . . . . . . . . . . . . . . . . . . . . . . . . 285
Changing . . . . . . . . . . . . . . . . . . . . . 301
Compact Spare . . . . . . . . . . . . . . . 305 Tires (cont'd)
Designations . . . . . . . . . . . . . . . . . 269
Different Size . . . . . . . . . . . . . . . . . 282
If a Tire Goes Flat . . . . . . . . . . . . 285
Inspection . . . . . . . . . . . . . . . . . . . . 278
Low Profile . . . . . . . . . . . . . . . . . . . 266
Pressure . . . . . . . . . . . . . . . . . 272, 273
Pressure Light . . . . . . . . . . . . . . . . 125
Pressure Monitor Operation . . 275
Pressure Monitor System . . . . . 274
Rotation . . . . . . . . . . . . . . . . . . . . . . 279
Sealant and
Compressor Kit . . . . . . . . 287, 293
Sealant and Compressor
Kit, Storing . . . . . . . . . . . . . . . . . . 300
Sidewall Labeling . . . . . . . . . . . . . 267
Terminology and Definitions . . 269
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 282
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 284
Wheel Replacement . . . . . . . . . . 284
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 280
Winter . . . . . . . . . . . . . . . . . . . . . . . . 266
Top Tier Fuel . . . . . . . . . . . . . . . . . . . 217

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
376 Index
WindshieldReplacement . . . . . . . . . . . . . . . . . 254
Wiper/Washer . . . . . . . . . . . . . . . . 100
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 170
Winter Tires . . . . . . . . . . . . . . . . . . . . 266
Wiper Blade Replacement . . . . . . 253
Wipers Rear Washer . . . . . . . . . . . . . . . . . 102
Wireless Charging . . . . . . . . . . . . . . 103